- Your regulators should be cold water certified when diving in water temperatures below 10 degrees Celsius
- Avoid excessive testing on the surface, especially using the purge button as this causes significant temperature drop in the first and second stages which can allow any moisture to freeze.
- Avoid breathing from or exhaling through your regulators whilst on the surface to prevent exhaled moisture freezing on the second stage components.
- Reduce the load on your first stage by avoiding excessive breathing and inflating your BCD / wing / drysuit whilst inhaling.
Cold Water Diving
As winter starts to set in and the temperature drops there is more that we need to bear in mind before each dive. I certainly don't want to put anyone off but diving in cold water creates a new set of challenges that need to be prepared for before actually going diving. Every piece of equipment that you use needs to be considered, checked and corrected/upgraded if it isn't up to scratch. As always your kit is life support equipment, if it fails or isn't up to the job you put your life in danger every time you get in the water. This is no more true than when we, as divers, encounter extreme conditions. If you think about it, its not just the obvious kit either like your regulators and thermal protection. What about the battery status of your dive computer? The cold can seriously affect the chemical reactions within the battery, reducing the performance of the battery in cold conditions. When you check it prior to the dive the battery will probably be nice and warm after you've travelled to your dive location but once you've jumped in and shocked it with the temperature change its not uncommon for the dive computer to report a low battery status and possibly even shut down as a result of insufficient current. All these little things can massively affect the outcome out your dive, if you even get in. So what are some of the main things to remember? Regulators